Hem stitch presser foot

Abstract

For a hem stitching operation with a sewing machine having a needle vertically reciprocating and also laterally swingable, a hem stitching presser foot is detachably mounted to a lower end of a presser bar of the sewing machine. The presser foot includes a brush like element which confronts a needle dropping hole formed in a sole of the presser foot, a frictional contact between the needle and the brush like element is produced when the needle passes the outside of the fabric edge, without penetrating the fabric, to stitch a portion of hem stitches on the outside of the fabric edge. The brush like element may be secured to the sole of the presser foot, or alternatively to a fabric guide member for engaging and guiding the fabric edge. The brush may be projected in the fabric feeding direction or across the fabric feeding direction. A pin may be located just beneath the brush like element for constant placement thereof.

What we claim is: 
     
       1. A hem stitching presser foot detachably mounted to a lower end of a presser bar of a sewing machine having a needle which is vertically reciprocated and swingable laterally of fabric feeding direction, said hem stitching presser foot comprising a sole to be pressed against a fabric to be sewn, a needle dropping hole formed in said sole for allowing said needle to penetrate the fabric, a fabric guide for engaging an edge of the fabric to guide the fabric therealong, and brush means covering a part of said needle dropping hole, by which a frictional contact between said needle and said brush means is produced when said needle passes the outside of the fabric edge to stitch a portion of hem stitches located on the outside of the fabric edge. 
     
     
       2. The presser foot as claimed in claim 1 wherein said brush means is secured to said fabric guide in the neighborhood of said needle dropping hole. 
     
     
       3. The presser foot as claimed in claim 1 wherein said brush means is secured to said sole in the neighborhood of said needle dropping hole. 
     
     
       4. The presser foot as claimed in claim 1, 2 or 3 which further comprises a pin located beneath said brush means for maintaining the same in a normal condition.